<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>

  <body>
    <div id="app">
      <div>
        <span>姓名:</span>
        <input type="text" v-model="currentItem.name" />
      </div>
      <div>
        <span>年龄:</span>
        <input type="number" v-model="currentItem.age" />
      </div>
      <div>
        <span>性别:</span>
        <select v-model="currentItem.gender">
          <option value="男">男</option>
          <option value="女">女</option>
        </select>
      </div>
      <div>
        <button @click="addOrEdit()">添加/修改</button>
      </div>
      <div>
        <table border="1" cellpadding="10" cellspacing="0">
          <tr>
            <th>序号</th>
            <th>姓名</th>
            <th>年龄</th>
            <th>性别</th>
            <th>操作</th>
          </tr>
          <tr v-for="(item, index) in list" :key="item.id">
            <td>{{ index + 1 }}</td>
            <td>{{item.name}}</td>
            <td>{{item.age}}</td>
            <td>{{item.gender}}</td>
            <td>
              <button @click="del(item.id)">删除</button>
              <button @click="edit(item.id)">编辑</button>
            </td>
          </tr>
        </table>
      </div>
    </div>
    <script src="./vue.js"></script>
    <script>
      const app = new Vue({
        el: "#app",
        data: {
          list: [
            { id: 1, name: "张三", age: 28, gender: "男" },
            { id: 2, name: "李四", age: 22, gender: "女" },
            { id: 3, name: "王五", age: 35, gender: "男" },
            { id: 4, name: "赵六", age: 29, gender: "女" },
          ],
          currentItem: {
            id: null,
            name: "",
            age: "",
            gender: "",
          },
          isEditMode: false,
        },
        methods: {
          del(id) {
            this.list = this.list.filter((item) => item.id !== id);
          },
          edit(id) {
            this.isEditMode = true;
            const selectedItem = this.list.find((item) => item.id === id);
            this.currentItem = { ...selectedItem };
          },
          addOrEdit() {
            if (
              this.currentItem.name &&
              this.currentItem.age !== "" &&
              this.currentItem.gender
            ) {
              if (this.isEditMode) {
                // 编辑
                this.list = this.list.map((item) =>
                  item.id === this.currentItem.id
                    ? { ...this.currentItem }
                    : item
                );
                this.isEditMode = false;
              } else {
                // 添加
                const newItem = {
                  id: Date.now(),
                  name: this.currentItem.name,
                  age: this.currentItem.age,
                  gender: this.currentItem.gender,
                };
                this.list.push(newItem);
              }
              // 清空表单
              this.currentItem = {
                id: null,
                name: "",
                age: "",
                gender: "",
              };
            } else {
              alert("请填写完整信息");
            }
          },
        },
      });
    </script>
  </body>
</html>
